I'm following along, step by step, as I do my harness. One thing that I found super helpful is how you explain individual wires, especially the orange/tan highlighted items on your charts. They are not explained well on the website, but hearing you explain them helps immensely. Thanks again for putting this info out there at no charge. You are a saint.

You are a very knowledgeable individual.

Very helpful. Thanks for spending time helping out others.

Really appreciate the effort you put into this video series. Thank you.

Bro! You're a hero. Spent the evening reworking my harness while watching along on the video. I don't know how i would have gotten throughout without your info. I appreciate the time you take to explain why you're doing things a certain way

I love you. (No homo). You just made the 6.0 swap into my ‘68 camaro flawless. THANK YOU!!!

Your videos have given me the confidence to cut down my own harness !! This will save me 300-400 bucks :) Thank you.

So amazing watching You do this entire Harness , Destruction, Repair with 1 pair of Gloves on ... I can’t Work with gloves on , and I do Car Audio Installs Everyday .. 👏🏼👌🏻

your videos and site saved me alot of time! thanks for the info! im swapping an lm7 into a 1989 sr5 toyota pickup.

Very clean job everything looked just like it should be thanks for sharing your video

I really appreciate the video. You will have my business for PCM (programming when i get it). Thanks Again

When I worked at a salvage yard I learned to use a heat gun to soften the glue on the GM range sensor connector andd this way I could get them out intact.

Can you list off all the wires you have removed I would just like to confirm before I wrap it back up thanks for sharing your incredible knowledge towards this stuff you have saved us all tones of time and money

@LT1SWAPCOM

6 жыл бұрын

I have complete pinouts that show you every wire to take out. Look at video 1, I have links to them on my site.

Great series Brendan. I appreciate you putting this together. What loom sizes do you use? Is there a published list of all the connectors used in the GM wiring harness? Where do you get all the ones you've used to replace bad ones?

Thanks for taking the time to be so diligent in filming this video. I am trying to find out if I need to replace the entire wiring harness or not. I have some burned and broken wires between the outer fuse box and the firewall. Is there a workaround? I've already tried to solder to no avail. Thanks again for you help!!

Great background Music 🎶......

Thanks for the videos I've been watching them while I go through my 2005 VW 1.8t harness I'm trying to put into 1990 VW Jetta haha

Thanks for this. I've been following along. Curious where you get the plugs. I need to replace the coolant temp plug. I could just buy a pigtail, but that seems like a waste.

Hey Brendan, awesome job! I followed you along and it worked out for the most part. I have a different plu for the neutral safety switch, one bigger grey plug, only 2 wires from the PCM are disconnected. I'm not sure what I should do. I think there is a lot of info for the PCM to control engine while going through the different gears. I guess I just leave it in and add the transmission eh?

@OoJoeShowoO

6 ай бұрын

What did you end up doing? i also have that plug?

@sarblade

6 ай бұрын

To be honest with you, I don't remember. I do know that my harness was for a 4x4, so it has the transfer case wiring to deal with as well. Also, I think the LT1Swap harness here is for an older 4l60e transmission that had a different plug than my 2003 4l60e.@@OoJoeShowoO

That looks like my fishing reel sometimes!😂🤣😂

JAVIER . nice work you are doing so am swapping the same engine (vortec 5.3 v8) my transmission is a 4L60E so my question is i need to save all wiring related with the transmission including the neutral safety switch?

Wow, such great information and totally step by step! I wonder if this can be done for a 4.3 v6 as Id like to fit one I have in an older vehicle with little room.

I think I learned from watching this if you eliminate a sensor wire you can make and engine light go off. Like for a purge sensor.

hey Brendan I'm curious do i need to keep the TCC in or can it be removed i will be using a 700r4 trans?

Great video, one question I'm wanting to use my sm465 in this swap on my k20 so can I just cut off all the trans stuff also can I also use a mechanical temperature gauge? If so how do I go about that?

I am planning on do this swap into a 76 f150 other than cleanliness what is the need to unpin and clean the harness I am planning on transplanting everything including fuse block to the ford and running analog gauges I suppose I would need to change the sensors out am I correct

I have a 2004 L59 5.3. Is this the same as the one in this video? This motor is coming out of a Suburban. 4L60E trans that I will use as well. Thanks!

Will this same set up work for a 6.0 as it would for a 5.3??? Thank you

JAVIER. once again if a need to save all wiring for automatic trans 4L60E i need to fuse them the same way you did block fuse for injector?

Where do I get schematic pin out list color coded print out like yours!!! And u my friend r a life saver with this video🤙🏽🤙🏽🤙🏽

@occotillobrock

5 жыл бұрын

Antonio Ochoa His website

@impactajuvenile

5 жыл бұрын

Ohhh Duh 🙄???!

Do you have a LINK on where I can Purchase All the Factory Replacement Plugs you use to Replace Damaged plugs

Which wire I need to keep in my automatic transmission 4L60E

How would you wire if you want to keep ac?

where did you buy the kit with all the connecters you are fixing??

Wish you had a video for genV L83..... I’m stuck🤦🏽‍♂️.....

If you are not using an auto transmission can you just remove the transmission plug? half the wires are gone anyway

It would really help if you at least described the colors of the wires going into different sensor plugs since you don’t want to zoom in with the camera

I have a question, I’ve got my red/blue harness slimmed down. I’ve got a green wire with a white stripe that goes to dbw 6 pin throttle body that somehow got cut and doesn’t go to anything now and I can’t figure out where it goes.

Hi thanks for the videos,I would like to know about the dbw harness,I got a 2004 envoy 5.3 that I want to swap to a 2004 colorado I want to use engine,trannsmiccion harnness on the colorado,does it works good,I hear that it can have reduce power problems is this true or it can work just fine

Couple questions for you, 1) do I need to run the front o2 sensors my harness had them cut off and my 95 tahoe is emissions exempt 2) what do you do with the blue label wires you keep on the pin out chart ?

hello! would you tell me if you save Vehicle speed sensor wires which are related with automatic trans? am reworking the same harness as yours and am saving all sensor and connector related with an automatic trans 4l60e

is there anything different on a 02 yukon harness

Sorry if you said why and I missed it but why did you use vinyl tape for some parts and the cloth Tesa tape for others?

@LT1SWAPCOM

6 жыл бұрын

Usually if it will be visible, or be in a possibly high heat or high abrasion area I will use the Tesa cloth tape.

Where does the brake switch cable go to

I'm doing a swap not a ls but a mopar swap but is this whole process needed to make the swap?

@danielbuckner2167

Жыл бұрын

Anybody else asking this 3 years later should check out DIY hemi as those guys are doing this now.

Where can we find those ecm pins and connectors if we need to replace them

@c8086o

5 жыл бұрын

DmonchilD78 Sites like waytec and mouser should have everything you need. Pretty sure I saw part numbers on his site.

How difficult is it to make this wiring harness so that you can hide the PCM, Say under the Dash/IP ? I'm assuming that your going to need a bit of wire so that you can make it fit in that placement...Comments ?

Is there any "failure rate" for using old OEM wiring? My swap engine is in my 04 Van with 760K miles (400K on second used LQ9 engine out of Escalade) still runs fine. Thanks.

@LT1SWAPCOM

5 жыл бұрын

Its something to think about. That is a lot of heat cycles on the wiring insulation, the loom covering it, and so on. I always take them apart to inspect wiring. Too much damage I won't use one.

@davebarron5939

5 жыл бұрын

@@LT1SWAPCOM Very good, that is my biggest fear (especially after learning from your vids now) I will have to do the same and inspect wires when I pull it all out this spring. Thanks, and thanks for all the help you provide everyone, amazing effort.

Just did my harness ill post a video soon pretty easy thanks lt1swap god Brandon and ls swap guru

Brandon why do you keep the solenoid wire on the harness. Sorry for the stupid question

@LT1SWAPCOM

6 жыл бұрын

Its already routed down to the starter, so easier just to use it as opposed to the vehicle's wiring the engine is going into. Its really up to you. You can just leave it in there, take it out, whatever you want to do.

How can i do a 5.7 vortec stand alone harness from a chevy 97

why are we removing the oil pressure wires / plug? wouldn't we want to know our oil pressure? newb here so forgive the question if it is dumb

Thanks for the video its a big help. My knock sensors were rusty and corroded so I removed the wiring to eliminate them. Was that a good or bad idea?

@LT1SWAPCOM

6 жыл бұрын

I always recommend keeping knock sensors. You can buy a new sub harness that goes under the intake from most any parts store. Dorman sells them.

what do i need to worry about with DBW? im following along for an 8.1 conversion into my 68 c10

@Mikegee92

2 жыл бұрын

Ever figure that out?

@hyder408

2 жыл бұрын

@@Mikegee92 yes, all figured out, and runs great! I was missing the tac module for it.

Why would you remove the flex fuel sensor? E85 runs faster. Another question. I plan to install a power glide transmission. Do I remove all the transmission wires out of the harness

@LT1SWAPCOM

2 жыл бұрын

If you want it...keep it. very simple. I can't even buy E85 around here. No one has it.

Which pins do I need for the o2 sensor connectors?

@maj0dy1

2 жыл бұрын

Same question

Can you remove the transmission harness if you are not using it I’m using a power glide

@LT1SWAPCOM

5 жыл бұрын

Yes you sure can. 13 wires on 4l60e at the round plug, 12 of which go to the PCM, 1 is 12v+. You can also remove all of the range switch wiring. I recommend keeping the vehicle speed sensor.

A/C ? Do I skip over the part when you delete the ac wiring to retain A/C

@evansautomotive307

4 жыл бұрын

What did you end up doing? I am not sure either thanks!

@girlsallfall

3 жыл бұрын

@@evansautomotive307 I ended up going with a Holley

My harness is not like yours, like where your pcm is located u only have 2 feet of wire coming from it an mine is 5 feet. Do I still follow the same process?

@LT1SWAPCOM

6 жыл бұрын

What is your harness from?

@MegaSuburban

6 жыл бұрын

Sounds like it is from a van. Mine is from a 03 express van and it is much longer.

@LT1SWAPCOM

6 жыл бұрын

The van harness is longer, and will have a white rectangle fuse block plug (called C1 in schematics) The process would be identical. The van rear oxygen sensors will be in a multi-pin connector extension wrapped in heat resistance tape. Those can come out if you don't need rear o2 sensors.

do you have to run the forward O2 sensors

@Kloopofadown

5 жыл бұрын

Yep

I don’t get it why can’t you just leave the ignition and starter wires into the PCM? And fuse it from there like the factory did

@LT1SWAPCOM

3 жыл бұрын

You sure can if you want. You can wire it however you like. Most vehicles I'm swapping into already have a perfectly good starter solenoid circuit and neutral safety switch in line, so no need to add the PCM to the circuit.

The 04 harness is electric throttlebody to but I am running drive by cable Throttlebody. I already wire in the iac and tps sensors but will my computer operate The sensors ?

@LT1SWAPCOM

3 жыл бұрын

if you are converted to mechanical (DBC) and the PCM was previously electric (DBW) programming will have to be done to change, and the PCM must also be compatible. lt1swap.com/cable_conversion.htm

havent noticed but do you maintain the OEM OBDII plug?

@bishop5166

5 жыл бұрын

Yes. You have to keep that if you want to diagnose any future problems.

It's only "tedious" until you open the hood & show off what "professional wiring" looks like... And perhaps that 1st burnout where your wires didn't fall off or get fried

If i wanted to retain the ac compressor, would i leave all the ac wires in? Whats the minimum wires needed to keep the factory ac?

@girlsallfall

5 жыл бұрын

samuelk009 I need the same ? Answered

@gerardolopez5875

3 жыл бұрын

@@girlsallfall @ did he snswer?

Hello how much for a harness and computer from you? Thanks

@49:40 what wires were those you saved in case someone needed it? And before that you removed reverse light wiring. Is that needed for the reverse lights to come on? Or would the reverse lights be activated from something else?

I want to find someone who could make me a harness but still use my stock obs yukon fuse box

This doesn’t help for an 03 harness you have sensors and wires removed that are different for me. You don’t show the plugs or the layout very well at all so I got lost and now I have a harness completely effed up

@LT1SWAPCOM

Жыл бұрын

I have pictures on my website and facebook page with circles and arrows showing the entire layout and more, lots of FREE info if you look around for a while.

Hey what about the Neutrual Safety Switch for 4l60e transmisison ? I am running the 4l60e from a 2002 Surbanan .. Do I have to keep this in the wiring harness or do I remove it ? No one never talk about that or we must have miss it.. I heard you can use the 4l60e "without" the Neutral safety Switch..is this true.. Basically break down Neutral Safety Switch wiring , and removal if possible.. thank you.. Thanks Great video..

@bishop5166

5 жыл бұрын

Might as well just keep it.

@gerardolopez5875

3 жыл бұрын

Did he or anybody, answer?

@alphathefirstone1222

3 жыл бұрын

@@gerardolopez5875 no he did not.. if you want to see the weirdest thing in the world when it come to ls swap. Ask anyone on any video about the neutral safety switch. Hell call the dealer, call summit call anyone. NO ONE HAS an ANSWER. NOT EVEN THE FAMOUS TV SHOWs LIKE TRUCKS, Power nation, and so. They never talk about the neutral safety switch....look at the car flipping show, or the car custom shows they never talk about the neutral safety switch. And yet and yet and yet, they all claim to be EXPERTS OR MY FAVORITE "I HAVE BEEN DOING LS SWAP FOR X AMOUNT OF YEAR"....Then you ask them about the neutral safety switch and they go blank....that why I went oldschool with a sm465...now they all hate me...lol..if you do not believe just call around and see all the non answer you get....lol

@warrenlancaster8045

3 жыл бұрын

There is a Pin out on the ECU for the neutral saftey switch. Leaving it unpinned or not connected, the ECU will assume the transmission is always in gear. (Can be dangerous if you leave it in gear and start it) and you can leave it unplugged from there. In order to get the Neutral safety switch to work properly, you need a wire that’s grounded when in park or neutral and open in gear. DO NOT just ground the ECU pin thinking you’ll trick it into thinking it’s in park/neutral. The ECU is programmed to idle higher in park, so if you’re in gear with it thinking you’re in park, the idle will be too high causing the car to try and push through the brakes when stopped and in gear.

@gerardolopez5875

3 жыл бұрын

@@warrenlancaster8045 @ on this video!!👆🏻 He just cutted 3 wires,, but did not explain what he did with the one groung left,,, and with the small plug🤔

How would you wire if you want to keep ac?